Chemistry on the Environment

What is the 2^nd most abundant gas in the atmosphere?

• N₂

• O₂

• Ar

• CO₂

The ozone (O₃) acts as a protective layer from the dangerous high-energy UV rays. Where is the ozone layer located in the atmosphere?

• Troposphere

• Stratosphere

• Thermosphere

• Mesosphere

From the pollutants below, which one is not produced from combustion?

• Sulfur oxides

• Nitrogen oxides

• Methane

• Carbon dioxide

Melting iceberg on the pole will lead to a continuous events which will make everything worse. This kind of event is an example of...

• Positive feedback

• Negative feedback

• Positive outcome

• Negative review

To minimize the production of nitrogen oxides from car engines, what can we install on the exhaust?

• Limewater

• Catalytic converters

• Blowers

• Mesh filters

Sulfur oxides can be harmful to human. Which organ will be damaged the most when we're exposed to sulfur oxides?

• Brain

• Mouth

• Lungs

• Stomach

Installing filters on the exhaust is one method to reduce pollutant release to the atmosphere. What kind of pollutant is controlled by this method?

• Methane

• Particulates

• Carbon monoxide

• Carbon dioxide

Some of the pollutants are the parts of acidic oxide, causing acid rain when deposited in te cloud. Which gas(es) from below contributes to the acid rain?

• SO₂

• NO₂

• CH₄

• CO

When nitrogen oxides are present in the air, they can react with various things making the air visibly dirty. This kind of phenomenon is also known as...

• Photochemical smog

• Photosensitive air

• Photosynthesis reaction

• Photocatalytic materials

Nature is also trying to recover the environment, and one of the most well-known way is the photosynthesis. Which organism(s) can do photosynthesis?

• Human

• Animals

• Plants

• Algae